CN115125585B - Unique magnesium electrolysis direct current bus device and use method - Google Patents
Unique magnesium electrolysis direct current bus device and use method Download PDFInfo
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- CN115125585B CN115125585B CN202110317721.5A CN202110317721A CN115125585B CN 115125585 B CN115125585 B CN 115125585B CN 202110317721 A CN202110317721 A CN 202110317721A CN 115125585 B CN115125585 B CN 115125585B
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- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 47
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 37
- 239000011777 magnesium Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 65
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 65
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003063 flame retardant Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/04—Electrolytic production, recovery or refining of metals by electrolysis of melts of magnesium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a unique magnesium electrolysis direct current bus device and a use method thereof. The invention can realize the tight connection of the magnesium electrolysis direct current bus configuration and the series electrolytic tank configuration, and achieves the effects of optimizing the space layout, saving aluminum materials, facilitating operation and maintenance and reducing circuit electricity loss; the novel magnesium electrolytic cell direct current safety shunt system solves the problems that the existing magnesium electrolytic cell direct current on-off switch device is complex in structure, complex in operation, limited in power-off time, easy to damage switch components and needs series power failure in switching operation, and eliminates the continuous influence on other electrolytic cells in series which normally operate; the insulating board UPM203 in the device has enough compression resistance, fracture resistance, impact resistance, heat deformation resistance and excellent insulating and flame retardant properties in the working environment.
Description
Technical Field
The invention relates to the technical field of magnesium electrolysis production, in particular to a magnesium electrolysis direct current bus device.
Background
The direct current bus is connected with the electrolytic tank in series to provide direct current, so that magnesium chloride in the electrolyte is reduced into magnesium metal and chlorine; about ten magnesium electrolysis manufacturers are built in turn from the beginning of 1957 in China to 2015 by the first 3000 tons/year magnesium electrolysis cell device, but the design capacity of the electrolysis cell is within 120 KA; it is common practice in the industry for a series of electrolytic cells to be deployed in a plant; in a factory building, the electrolytic cells are usually arranged in two rows, and a passageway is arranged in the middle; the main busbar consists of a plurality of aluminum rows which are arranged in parallel and have certain width and thickness, and is arranged in the basement at the upper part, the side part or the lower part of the electrolytic cell; one end of the anode branch bus is connected with the anode copper conducting plate, the other end of the anode branch bus is connected with the anode main bus, one end of the cathode branch bus is connected with the cathode, and the other end of the cathode branch bus is connected with the cathode main bus; the electrolytic tank flow dividing device generally adopts a main busbar short-circuit port structure mode; porcelain insulator column insulators are adopted between the main busbar and the bracket; such a dc bus arrangement has the following drawbacks: the direct current bus and the series electrolytic cells are not compact in configuration, relatively occupy larger space, are not beneficial to saving aluminum materials, are inconvenient to operate and maintain, have large line electricity loss, have complex structure, are complex in operation, have limited outage time, are easy to damage, and have larger continuous influence on other normally-running electrolytic cells in the series due to series outage when switching operation is carried out.
Because of the small capacity of the magnesium electrolyzer, the severity of the defects is generally masked, and thus no attention is paid to further optimizing the operation of the magnesium electrolyzer direct current bus bar assembly.
With the rapid development of the metal magnesium industry, the magnesium electrolytic tank is developed towards the large-scale direction, the capacity of the magnesium electrolytic tank is increased to more than 400KA, and under the condition of selecting the same current density, if the traditional small-capacity magnesium electrolytic tank direct current bus device is still used, the defects are amplified in a multiplied way, so that the requirement of the bus configuration of the large-scale magnesium electrolytic tank cannot be met.
Disclosure of Invention
The invention provides a magnesium electrolysis direct current bus device and a use method thereof, aiming at solving the problems that the traditional magnesium electrolysis direct current bus device has the disadvantages of compact configuration, large occupied space, large aluminum consumption, complicated manufacturing and installation, inconvenient operation and maintenance, large circuit electricity loss, short service life of an insulating part, complex structure, complicated operation, limited outage time, easy damage of a switch part and serial power failure or load reduction when in switching operation.
The technical scheme of the invention is as follows:
A unique magnesium electrolysis direct current bus device consists of a bus bar 1, an anode main bus bar 2, a cathode main bus bar 3, an anode branch bus bar 4, a cathode branch bus bar 5, an electrolytic cell shunt system 6, a bus bar buttress 7, a bus bar distance frame 8 and an insulating plate 9; the busbar 1 is led out from a rectifying unit (+) pole of a rectifying station 19 and enters a electrolysis workshop 20 to be laid in an overhead manner through busbar buttresses 7 along the rear sides of the series of electrolytic cells 10 in sequence, and is led out from the electrolysis workshop 20 and returned to a rectifying unit (-) pole, so that a complete magnesium electrolysis series direct current bus loop device is formed, a plurality of electrolytic cells 10 are arranged in the electrolysis workshop in total, the electrolytic cells 10 are symmetrically distributed back to back in two series, and the electrolytic cells 10 are connected in series through buses; the busbar 1 is formed by arranging a plurality of aluminum rows 21 with the same width and thickness in parallel and vertically, and gaps 22 are arranged between each aluminum row 21; the anode main busbar 2 of each electrolytic cell 10 is arranged above the cathode main busbar 3, and an anode branch busbar connecting aluminum plate 23 and a cathode branch busbar connecting aluminum plate 24 are respectively welded on the upper edge of the anode main busbar 2 and the lower edge of the cathode main busbar 3; one end of each anode branch bus 4 of each electrolytic tank 10 is connected with an anode copper conducting plate 11 through a first bolt 12, and the other end is connected with a corresponding anode branch bus connecting aluminum plate 23 through a second bolt 13; one end of each cathode branch bus 5 is welded with the cathode 14, and the other end is connected with the corresponding cathode branch bus connecting aluminum plate 24 through a third bolt 16; a shunt system 6 for on-off of the direct current of the electrolytic cells is arranged at the rear side of each electrolytic cell 10, and each shunt system 6 comprises two shunt switches 17 and a plurality of shunt connectors 18; the busbar distance frame 8 is arranged at the corresponding parts of the busbar 1, the anode main busbar 2 and the cathode main busbar 3 and used for enhancing the stability and preventing the displacement and the deviation of the busbar; the insulating plate 9 serves for electrical insulation between the busbar rest 7 and the supporting busbar.
Further, the busbar 1, the anode main busbar 2, the cathode main busbar 3, the anode branch busbar 4 and the cathode branch busbar 5 are made of cast aluminum, and are not lower than GB/T1196-2008 and Al99.60 standard.
Further, the rectifying station 19 is arranged close to the end of the electrolysis shop 20, the plurality of electrolysis cells 10 are symmetrically arranged in two rows back to back on two sides of the electrolysis shop 20, the anode main busbar 2 and the cathode main busbar 3 are close to the rear sides of the two rows of electrolysis cells 10, and the two rows of ends are connected to form a コ -shaped configuration, and the configuration mode can enable the power supply line to be the shortest.
Furthermore, the anode main busbar 2 and the cathode main busbar 3 are two parts of oblique cutting bodies obtained by cutting the busbar (1) along the diagonal, which are exactly matched with the current-carrying capacity change characteristics of the anode main busbar 2 and the cathode main busbar 3, so that the aluminum consumption can be saved by about half compared with the traditional method, the geometric dimension of the aluminum plate can be reduced, and the space configuration and the installation of the aluminum busbar are facilitated.
Further, the electrolytic cell shunting system 6 is a novel magnesium electrolytic cell direct current safety shunting system; comprising two shunt switches 17 and a multi-component shunt connector 18 arranged between the two shunt switches 17 positioned at both ends of the anode main busbar 2 and the cathode main busbar 3 of the electrolytic cell 10; the shunt system solves the problems that the existing direct current on-off switch device of the magnesium electrolytic tank has complex structure, complex operation, limited power-off time, easy damage of switch components and serial power failure or load reduction when in switching operation, and eliminates the continuous influence on other electrolytic tanks in normal operation in series.
Furthermore, the insulating plate 9 of the bus buttress 7 is UPM203 and is made of unsaturated polyester glass fiber board material, and the board has enough compression resistance, fracture resistance, impact resistance, heat deformation resistance and excellent insulation and flame retardance in the working environment;
The application method of the electrolytic direct current bus device specifically comprises the following steps:
step one, an inspection device: checking whether the direct current bus is required to complete all construction, acceptance and cleaning tasks;
(1) The busbar 1 between the rectifying station 19 and the electrolysis workshop 20 is installed, constructed and accepted;
(2) All the electrolytic cells 10 and the direct current buses of the electrolytic plant 20 are installed, constructed and accepted;
(3) The electrolytic cells 10 in the electrolytic plant 20 are cleaned;
(4) Cleaning all other construction foreign matters such as metal wires on the direct current bus;
(5) Cleaning a 0 meter platform and a +4meter platform of the electrolysis shop 20, and particularly ensuring that sundries (movable iron objects, tools and the like) which do not influence power transmission exist near a direct current bus;
(6) The insulation of the electrolytic tank 10 and the insulation of the bus reach the design requirement;
step two, short circuit test: detecting whether the construction quality of the direct current bus is qualified or not;
(1) The rectifying station 19 has the power supply condition, and the direct current of the rectifying unit is adjusted between 0 and the design rated value, so that the control is sensitive and reliable;
(2) The detection tool and the instrument (voltmeter, thermometer and ammeter grade) are ready, checked to be qualified, and the validity period is reached;
(3) The measuring staff are organized in place, the testing method is unified, the safety technical mating is completed, and the safety education examination is qualified;
(4) Emergency precautions are formulated and are familiar; (Power failure, first aid)
(5) After the test form is manufactured, the test requirement is met;
(6) The power-on time is determined, and irrelevant personnel in the workshop are cleaned;
(7) Safety measures are perfect;
(8) The connection of the whole series of short-circuit buses is perfect;
step three: energizing and de-energizing the electrolytic cell 10;
in particular, the direct current shunt system 6 of the electrolytic cell is independently arranged at the rear side of each electrolytic cell 10 in the direct current series, and each electrolytic cell 10 direct current shunt system 6 is composed of two shunt switches 17 and a multi-component shunt connector 18. When the electrolytic tank 10 needs to be powered off for a short time, only the two shunt switches 17 are synchronously turned on, and if the electrolytic tank needs to be powered off for a long time, all the shunt connectors 18 are also completely bypassed in sequence within a limited time except for the two shunt switches 17, so that the shunt switches 17 are prevented from being overheated and damaged; when the magnesium electrolysis cell is used, the air cylinder 25 on the shunt switch 17 is controlled to be closed through the control cabinet arranged outside, and the closing action of the air cylinder 25 drives the anode branch bus to be connected with the aluminum plate 23, so that the closing of the anode branch bus 4 is controlled, each magnesium electrolysis cell 10 is provided with a plurality of groups of anode branch buses 4, wherein only one shunt switch 17 is arranged on each branch bus at two ends; when the electrolytic tank 10 needs to be electrified, the anode branch bus 4 provided with the shunt switch 17 and the anode branch bus connecting aluminum plate 23 are connected with the fusing aluminum plate 27 through bolts, a wood insulating plate 26 is inserted between the rest of the anode branch bus 4 and the anode branch bus connecting aluminum plate 23, at the moment, current on the bus passes through the anode branch bus 4 provided with the shunt switch 17 at two sides, the connection of the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 is opened, at the moment, all current of the bus passes through the fusing aluminum plate 27, as direct current continuously passes through the bus, an arc can be generated at the moment of opening, and as the fusing aluminum plate 27 exists, the fusing aluminum plate 27 fuses under the effect of the arc, at the moment, series of direct current is disconnected from the shunt system 6, so that the electrifying of the electrolytic tank 10 is realized; when the electrolytic tank 10 needs to be powered off, firstly, the connection between the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 is opened through a control cabinet, the wood insulating plate 26 is taken out, the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 are directly compressed under the action of the air cylinder 25, then the insulating covers 15 of the component flow-dividing connectors 18 are sequentially removed, and at the moment, series direct current is completely bypassed from the flow dividing system 6, so that the power off of the electrolytic tank is realized; compared with the prior art, the invention has the following beneficial effects: the invention can realize the tight connection of the magnesium electrolysis direct current bus configuration and the series electrolytic tank configuration, and achieves the effects of optimizing the space layout, saving aluminum materials, simplifying manufacturing and installation, facilitating operation and maintenance, reducing circuit electricity loss and prolonging the service life of the device; the novel magnesium electrolytic cell direct current shunt system in the device solves the problems that the existing magnesium electrolytic cell direct current on-off switch device is complex in structure, complex in operation, limited in power-off time, easy to damage switch components and needs series power failure or load reduction when in switching operation, and eliminates the continuous influence on other electrolytic cells in series which normally operate; the insulating board UPM203 in the device has enough compression resistance, fracture resistance, impact resistance and heat deformation resistance strength and excellent insulating and flame retardant properties in the working environment.
Drawings
FIG. 1 is a plan view of a DC bus of the present invention;
FIG. 2 is a cross-sectional view A-A of the present invention;
FIG. 3 is a cross-sectional view of the invention B-B;
FIG. 4 is a cross-sectional view of the invention C-C.
In the figure: 1. a bus bar; 2. an anode main busbar; 3. a cathode main busbar; 4. an anode branch bus; 5. a cathode branch bus; 6. an electrolyzer split system; 7. a busbar buttress; 8. a busbar distance frame; 9. an insulating plate; 10. an electrolytic cell; 11. an anode copper conductive plate; 12. a first bolt; 13. a second bolt; 14. a cathode; 15. an insulating cover; 16. a third bolt; 17. a shunt switch; 18. a shunt connector; 19. a rectification station; 20. an electrolysis workshop; 21. an aluminum row; 22. a void; 23. the anode branch bus is connected with the aluminum plate; 24. the cathode branch bus is connected with the aluminum plate; 25. a cylinder; 26. a wood insulating board; 27. fusing the aluminum plate; 28. aluminum soft belts; 29. an aluminum plate; 30. the shunt is flexibly connected with the aluminum plate.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-4, the invention provides a unique magnesium electrolysis direct current bus device, which consists of a bus bar 1, an anode main bus bar 2, a cathode main bus bar 3, an anode branch bus bar 4, a cathode branch bus bar 5, an electrolytic cell shunt system 6, a bus bar buttress 7, a bus bar distance frame 8 and an insulating plate 9. The busbar 1 is led out from a rectifying unit (+) pole of a rectifying station 19 and enters a electrolysis workshop 20 to be laid in an overhead manner through busbar buttresses 7 along the rear sides of the series of electrolytic cells 10 in sequence, and is led out from the electrolysis workshop 20 and returned to a rectifying unit (-) pole, so that a complete magnesium electrolysis series direct current bus loop device is formed, a plurality of electrolytic cells 10 are arranged in the electrolysis workshop in total, the electrolytic cells 10 are symmetrically distributed back to back in two series, and the electrolytic cells 10 are connected in series through buses; the bus bar 1 is formed by arranging a plurality of aluminum rows 21 with the same width and thickness in parallel and vertically, and gaps 22 are arranged between each aluminum row 21; the anode main busbar 2 of each electrolytic cell 10 is arranged above the cathode main busbar 3, and an anode branch busbar connecting aluminum plate 23 and a cathode branch busbar connecting aluminum plate 24 are respectively welded on the upper edge of the anode main busbar 2 and the lower edge of the cathode main busbar 3; one end of each anode branch bus 4 of each electrolytic tank 10 is connected with an anode copper conducting plate 11 through a first bolt 12, and the other end is connected with a corresponding anode branch bus connecting aluminum plate 23 through a second bolt 13; one end of each cathode branch bus 5 is welded with the cathode 14, and the other end is connected with the corresponding cathode branch bus connecting aluminum plate 24 through a third bolt 16; a shunt system 6 for on-off of the direct current of the electrolytic cells is arranged at the rear side of each electrolytic cell 10, and each shunt system 6 comprises two shunt switches 17 and a plurality of shunt connectors 18; the busbar distance frame 8 is arranged at the corresponding parts of the busbar 1, the anode main busbar 2 and the cathode main busbar 3 and used for enhancing the stability and preventing the displacement and the deviation of the busbar; the insulating plate 9 serves for electrical insulation between the busbar rest 7 and the supporting busbar.
Example 2
The application method of the unique magnesium electrolysis direct current bus device specifically comprises the following steps:
step one, an inspection device: checking whether the direct current bus is required to complete all construction, acceptance and cleaning tasks;
(1) The busbar 1 between the rectifying station 19 and the electrolysis workshop 20 is installed, constructed and accepted;
(2) All the electrolytic cells 10 and the direct current buses of the electrolytic plant 20 are installed, constructed and accepted;
(3) The electrolytic cells 10 in the electrolytic plant 20 are cleaned;
(4) Cleaning all other construction foreign matters such as metal wires on the direct current bus;
(5) Cleaning a 0 meter platform and a +4meter platform of the electrolysis shop 20, and particularly ensuring that sundries (movable iron objects, tools and the like) which do not influence power transmission exist near a direct current bus;
(6) The insulation of the electrolytic tank 10 and the insulation of the bus reach the design requirement;
step two, short circuit test: detecting whether the construction quality of the direct current bus is qualified or not;
(1) The rectifying station 19 has the power supply condition, and the direct current of the rectifying unit is adjusted between 0-design rated value, so that the control is sensitive and reliable;
(2) The detection tool and the instrument (voltmeter, thermometer and ammeter grade) are ready, checked to be qualified, and the validity period is reached;
(3) The measuring staff are organized in place, the testing method is unified, the safety technical mating is completed, and the safety education examination is qualified;
(4) Emergency precautions are formulated and are familiar; (Power failure, first aid)
(5) After the test form is manufactured, the test requirement is met;
(6) The power-on time is determined, and irrelevant personnel in the workshop are cleaned;
(7) Safety measures are perfect;
(8) The connection of the whole series of short-circuit buses is perfect;
step three: energizing and de-energizing the electrolytic cell 10;
In particular, the direct current shunt system 6 of the electrolytic cell is independently arranged at the rear side of each electrolytic cell 10 in the direct current series, and each electrolytic cell 10 direct current shunt system 6 is composed of two shunt switches 17 and a multi-component shunt connector 18. When the electrolytic tank 10 needs to be powered off for a short time, only the two shunt switches 17 are synchronously turned on, and if the electrolytic tank needs to be powered off for a long time, all the shunt connectors 18 are also completely bypassed in sequence within a limited time except for the two shunt switches 17, so that the shunt switches 17 are prevented from being overheated and damaged; when the magnesium electrolysis cell is used, the air cylinder 25 on the shunt switch 17 is controlled to be closed through the control cabinet arranged outside, and the closing action of the air cylinder 25 drives the anode branch bus to be connected with the aluminum plate 23, so that the closing of the anode branch bus 4 is controlled, each magnesium electrolysis cell 10 is provided with a plurality of groups of anode branch buses 4, wherein only one shunt switch 17 is arranged on each branch bus at two ends; when the electrolytic tank 10 needs to be electrified, the anode branch bus 4 provided with the shunt switch 17 and the anode branch bus connecting aluminum plate 23 are connected with the fusing aluminum plate 27 through bolts, a wood insulating plate 26 is inserted between the rest of the anode branch bus 4 and the anode branch bus connecting aluminum plate 23, at the moment, current on the bus passes through the anode branch bus 4 provided with the shunt switch 17 at two sides, the connection of the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 is opened, at the moment, all current of the bus passes through the fusing aluminum plate 27, as direct current continuously passes through the bus, an arc can be generated at the moment of opening, and as the fusing aluminum plate 27 exists, the fusing aluminum plate 27 fuses under the effect of the arc, at the moment, series of direct current is disconnected from the shunt system 6, so that the electrifying of the electrolytic tank 10 is realized; when the electric power of the electrolytic tank 10 is required to be cut off, firstly, the connection of the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 is opened through a control cabinet, the wood insulating plate 26 is taken out, the anode branch bus 4 and the anode branch bus connecting aluminum plate 23 are directly compressed under the action of the air cylinder 25, then the insulating covers 15 of the component flow connector 18 are sequentially removed, and at the moment, series direct current is completely bypassed from the flow distribution system 6, so that the electric power of the electrolytic tank is cut off.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A unique magnesium electrolysis direct current bus device consists of a bus bar (1), an anode main bus bar (2), a cathode main bus bar (3), an anode branch bus bar (4), a cathode branch bus bar (5), an electrolytic cell shunt system (6), a bus bar buttress (7), a bus bar distance frame (8) and an insulating plate (9); the method is characterized in that: the busbar (1) is led out from the positive electrode of a rectifying unit of the rectifying station (19) and enters the electrolytic plant (20), is laid overhead through busbar buttresses (7) along the rear side of a series of electrolytic cells (10) in sequence, and returns to the negative electrode of the rectifying unit after being led out from the electrolytic plant (20) to form a complete magnesium electrolysis series direct current bus loop device, a plurality of electrolytic cells (10) are arranged in the electrolytic plant in a total, and are symmetrically arranged in a back-to-back mode in two series, and the electrolytic cells (10) are connected in series; the busbar (1) is formed by arranging a plurality of aluminum rows (21) with the same width and thickness in parallel and vertically, and gaps (22) are arranged between each aluminum row (21); the anode main busbar (2) of each electrolytic tank (10) is arranged above the cathode main busbar (3), and an anode branch busbar connecting aluminum plate (23) and a cathode branch busbar connecting aluminum plate (24) are respectively welded on the upper edge of the anode main busbar (2) and the lower edge of the cathode main busbar (3); one end of each anode branch bus (4) of each electrolytic cell (10) is connected with an anode copper conducting plate (11) through a first bolt (12), and the other end is connected with a corresponding anode branch bus connecting aluminum plate (23) through a second bolt (13); one end of each cathode branch bus (5) is welded with a cathode (14), and the other end of each cathode branch bus is connected with a corresponding cathode branch bus connecting aluminum plate (24) through a third bolt (16); an electrolytic tank shunt system (6) for switching on and off the direct current of the electrolytic tank is arranged at the rear side of each electrolytic tank (10), and each electrolytic tank shunt system (6) comprises two shunt switches (17) and a plurality of shunt connectors (18); the bus distance frame (8) is arranged at the relevant parts of the bus bar (1), the anode main bus bar (2) and the cathode main bus bar (3) and used for enhancing the stability and preventing the deviation; the insulating plate (9) is used for insulating between the busbar support pier (7) and the relevant main busbar;
The rectifying station (19) is arranged close to the end of the electrolysis plant (20), a plurality of electrolysis cells (10) are arranged in two rows back to back on two sides of the electrolysis plant (20), and the anode main busbar (2) and the cathode main busbar (3) are close to the rear sides of the two rows of electrolysis cells (10) and connect the ends of the two rows of electrolysis cells to form a コ -shaped configuration; the anode main bus bar (2) and the cathode main bus bar (3) are two-part beveling bodies obtained by cutting the bus bar (1) along a diagonal line;
The electrolytic cell shunt system (6) comprises two shunt switches (17) and a multi-component shunt connector (18) which are arranged between the two shunt switches (17) at two ends of the anode main busbar (2) and the cathode main busbar (3) of the electrolytic cell (10).
2. A unique magnesium electrolysis dc bus arrangement according to claim 1 wherein: the busbar (1), the anode main busbar (2), the cathode main busbar (3), the anode branch busbar (4) and the cathode branch busbar (5) are made of cast aluminum, and are not lower than GB/T1196-2008, and the standard of Al 99.60.
3. The application method of the unique magnesium electrolysis direct current bus device specifically comprises the following steps:
Step one, an inspection device: checking whether the direct current bus completes all construction, acceptance and cleaning tasks according to design requirements;
(1) The busbar (1) between the rectifying station (19) and the electrolysis workshop (20) is installed, constructed and accepted;
(2) Installing all the electrolytic cells (10) and the direct current buses in the electrolytic plant (20), finishing construction, and checking and accepting;
(3) The electrolytic cells (10) in the electrolytic plant (20) are cleaned;
(4) Cleaning all other construction foreign matters such as metal wires on the direct current bus;
(5) Cleaning a 0 meter platform and a +4meter platform of the electrolysis plant, and particularly ensuring that sundries which affect power transmission are not present near a direct current bus;
(6) The insulation of the electrolytic cell and the insulation of the bus reach the design requirement;
step two, short circuit test: detecting whether the construction quality of the direct current bus is qualified or not;
(1) The rectifying house (19) has the power supply condition, and the direct current of the rectifying unit is adjusted between 0 and the design rated value, so that the control is sensitive and reliable;
(2) The detection tool and the instrument are ready, checked to be qualified, and the validity period is reached;
(3) The measuring staff are organized in place, the testing method is unified, the safety technical mating is completed, and the safety education examination is qualified;
(4) Emergency precautions are formulated and are familiar;
(5) After the test form is manufactured, the test requirement is met;
(6) The power-on time is determined, and irrelevant personnel in the workshop are cleaned;
(7) Safety measures are perfect;
(8) The connection of the whole series of short-circuit buses is perfect;
step three, electrifying and powering off the electrolytic cell:
In the concrete implementation, the electrolytic cell shunting system (6) is independently arranged at the rear side of each electrolytic cell (10) in the direct current series, and the electrolytic cell shunting system (6) of each electrolytic cell (10) is composed of two shunting switches (17) and a multi-component shunting connector (18); when the electrolytic tank needs to be powered off for a short time, only the two shunt switches (17) are synchronously conducted; if the electrolytic tank (10) needs to be powered off for a long time, besides synchronously conducting the two shunt switches (17), all the shunt connectors (18) are sequentially and completely bypassed within a limited time so as to avoid overheat damage of the shunt switches (17); when the electrolytic cell is used, the air cylinder (25) on the shunt switch (17) is controlled to be closed through the control cabinet arranged outside, and the closing action of the air cylinder (25) drives the anode branch bus to be connected with the aluminum plate (23), so that the closing of the electrolytic cell and the anode branch bus (4) is controlled, each electrolytic cell (10) is provided with a plurality of groups of anode branch buses (4), wherein only one shunt switch (17) is respectively arranged on the branch buses at two ends; when the electrolytic tank (10) needs to be electrified, the anode branch buses (4) provided with the shunt switches (17) and the anode branch bus connecting aluminum plates (23) are connected with the fusing aluminum plates (27) through bolts, a wood insulating plate (26) is inserted between the rest of the anode branch buses (4) and the anode branch bus connecting aluminum plates (23), at the moment, the current on the buses passes through the anode branch buses (4) of the shunt switches (17) arranged on two sides, the connection of the anode branch buses (4) and the anode branch bus connecting aluminum plates (23) is opened, at the moment, all the current of the buses passes through the fusing aluminum plates (27), because direct current continuously passes through the buses, an electric arc can be generated at the moment of opening, and because of the existence of the fusing aluminum plates (27), the fusing aluminum plates (27) can be fused under the effect of the electric arc, at the moment, the series of direct current is disconnected from the electrolytic tank shunt system (6), and the electrization of the electrolytic tank is realized; when the electric tank (10) needs to be powered off, firstly, the connection between the anode branch bus (4) and the anode branch bus connecting aluminum plate (23) is opened through the control cabinet, the wood insulating plate (26) is taken out, the anode branch bus (4) and the anode branch bus connecting aluminum plate (23) are directly pressed under the action of the air cylinder (25), then the insulating cover (15) of each component flow connector (18) is sequentially removed, and at the moment, series direct current completely passes through the electric tank flow distribution system (6), so that the electric tank is powered off.
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